1999291216

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{9611977}}^1$

素因数の和:9611998

約数の個数: 20

約数和(自身を含む): 4171598452

約数和(自身を除く): 2172307236

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 9611977, 19223954, 38447908, 76895816, 124955701, 153791632, 249911402, 499822804, 999645608, 1999291216]

約数ペア:

[(1, 1999291216), (2, 999645608), (4, 499822804), (8, 249911402), (13, 153791632), (16, 124955701), (26, 76895816), (52, 38447908), (104, 19223954), (208, 9611977)]